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Italian off-set circumferentor, 1601-1700

Surveying

1601-1700

Transit compass, signed by Blydenburgh and Giles o

Surveying

1840-1842
Circumferentor by G. Adams of London, used in 1763 on the survey of the Mason-Dixon line, 1725-1763

Circumferentor, 1750-1763.

Surveying

1750-1763

Surveyors compass, 1801-1830.

Surveying

1801-1830

Circumferentor

Surveying

1731-1770

Circumferentor, in mahogany box

Surveying

Circumferentor by Joseph Somalvico & Co., 1839-1899

Surveying

1839-1899

Surveyor's compass

Surveying

1836-1856

Circumferentor, Italian, 1686

Surveying

1686

Circumferentor by J.M. Kleman and Son of Amsterdam

Surveying

1771-1800

Surveyor's compass

Surveying
Circumferentor by Fraser, London, late 18th century

Circumferentor by Fraser, London, late 18th centur

Surveying